Die for two-roll corrugating machines



Nov. 26, 19 5. I J. c. FISHER El AL 2,022,032

DIE FOR TWO-ROLL CORRUGATING MACHINES Filed March 8, 1955 2 Sheets-Sheetl W ATTORNEY Nov. 26, 1935. I Q s R ET AL 2,022,082

DIE FOR TWO-ROLL CORRUGATING MACHINES Filed March 8, 1955 2 Sheets-Sheet2 INVENTORS Jofifi C M M a. M,

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/ ATTORNEY Patented Nov. 26, 1935 UNITED STATES PATENT OFFICE aozzpszApplication March 8, 1935, Serial No. 10,036

6 Claims, (01. 153-77) p This invention relates to new and usefulimprovements in dies for two-roll corrugating machines. I

' It is the primary object of the invention to provide adjustable diesfor use on two-roll corrugating machines, and more particularlyadjustable crimping dies for making V-crimp roofing more accurate inpitch, with more concise and clear shaped Vs, and with more attrac- 10tive and uniform radii at the tops andbottoms of the Vs.

Variations in the temper of the material resulting from the differentmethods and processes employed by various sheet makers, cause onemanufacturers sheets to be harder and possess more springiness than thesheets made by another manufacturer. Hence it is impossible for a diemanufacturer to make for all customers, standard sets of V crimproofingdies that will place the Vs in exactly correct locations on the sheetsunless these sheets are made by the same methods and processesand havethe same physical properties. y

In order to obtain the exactly correct spacing of all the VS in thesheet regardless of the variations in the temper of the material, it isnecessary that the second and third V-inserts be arcuately adjustable asmall amount. It is therefore one principal objectof our invention to 39provide for V'- crimp roofing dies that are required to operate uponsheets of different degrees of hardness, floating and bolted insertsthat are adapted to an easy and quick arcuate adjustment in the field togive the correct location of the vs in the sheets.

Another object of our invention is to provide V-crimp roofing dies thatare interchangeable from one roll to the'other.

It is another object of our invention to provide 40 a roll in which asingle, second or middle V- crimp die may be easily replaced by afloating double V-die to form with the other roll a6 V-crimp roofing dieafter a double'v has been The floating steel pieces inserts, Figure-4 isa plan view of the same. Figure 5 is a side viewof one of the middle,single V, adjustable dies. Figure 6 is a plan view of the same. Figure'7 is a side view showing the double V inserts in the middle positionson the 5 top and bottom rolls to form a six V-crimp die. And Figurev 8is a plan view of a piece of 5-V v crimp roofing,a product of ourmachine.

Referring to the accompanying drawings for a detaileddescription of ourinvention, the, nu- 10 meral I designates a two-roll corrugatingmachine. of a well-known type. Suitably journaled for co-acting rotationin this machine is a top roll 2 and a bottom roll 3. In the presentinstance each roll has six sides. 15 Inthe first die 'plate 4 in thebottom roll 3 there isformed an axial peripheral recess 5 thatreceives'a steel piece 6 which is bolted to the die plate. The steelpiece 6 on whose outer surface there is formed a single inverted Vprojection, carries a plurality of spaced pins 1 on which a seri'es'ofshorter steel pieces 8 are slidably mounted within the-recess 5. Eachone of these pieces is" formed at its outer periphery with an inverted,V -projection which is immediately adjacent the similar projection onthe fixed piece 6. The pieces 8 float on the pins 1 in relation to thepitch or spacing between them and the bolted piece 6, so that pieces 8may float the necessary amount to effect the proper bite on the 3incoming fiat sheet (not shown) and move the bite f it toward the boltedsteel piece 6. In doing so, itwill fold-rather than draw, the metal informing the first double V in the five crimp sheet, thereby greatlyreducing the likelihood of 35 cracking and peeling the spelter on thesheet near and at the bends or crimps.

Thefloating steel pieces 8 are gently held in a yielding position awayfrom the bolted steel 0 piece 6 by a number of small helical springs 9'whose ends fit in alined recesses in the floating pieces and the boltedpiece.

a 8 are actuated by their meshing with a steel female double V-piece I8bolted in a recess adapted to receive it in the first die plate ll inthe top roll 2. The proper 'relation of the first top and the firstbottom steel pieces may be obtained through the conventional method ofradially adjusting the top roll neck 52 by conventional adjustingmechanism [3 on the top roll end gear.

As the rolls 2 and 3 revolve, advancing the sheet toward the steelinserts in the second or middle top and bottom die plates l4 and I 5respectively, the floating steel pieces 8 in the 55 first bottom dieplate 4 are automatically reset by the gentle pressure of theirrespective springs 9.

The second die plates l4 and I5 carry steel V inserts it and Hrespectively. These inserts are arcuately adjustable in relation totheirrespective die plates by the following means, for the purpose oflocating the single or middle V in the exact position required on thesheet.

Formed in the second die plate 14 in the top roll 2 is an arcuate recessl8 in which the V insert It is arcuately movable a short distance to theright or the left with a radius l9 drawn from it to the center 20 of theroll. This adjustment is. efiected by hollow head set screws 2| and 22in drilled and tapped holes on either side of the insert it in the dieplate l4. and 6.) These set screws are held secure against loosening byhollow set screws 23 and 24 locked tightly against them in the outerends of the tapped holes in said die. plate. A radial screw 25 whichenters a radial tapped hole in the die plate 26, holds the insert firmlyagainst the bottom of the recess It. When the screw 25 is loosened, theinsert is free to be adjusted in either direction by the hollow head setscrews 23 and 24, since a longitudinal slot 26 formed in the insertsurrounds the head of the screw 25.

The second V-insert I! in the recess 2'! in the die plate l5 in thebottom roll 3 may be similarly adjusted by hollow head set screws 28 and29 after a radial screw 30 is loosened. When in their adjustedpositions, the set screws 28 and 29 are held against loosening by hollowhead set screws 3i and 32 respectively.

Having formed the first double V and the single or middle V in thesheet, the latter is advanced toward the last double V which is formedin the same manner as the first double V. However, before the lastdouble V is formed, the rolls having a bite on the sheet, in advancingit, set up a different condition from that existing in forming the firstdouble V. This is due to the fact that all the metal for forming thelast double V must be advanced from the unformed edge of the sheettoward the inserts. It is. therefore necessary in order to fold, insteadof excessively draw, the metal, to have floating inserts on the thirdtop die plate and a bolted double V-insert in the third bottom dieplate.

Mounted for arcuate adjustment in a recess 33 in the third die plate 34in the top roll 2 is a series of inserts or retainers 35. Each of theseinserts comprises an elongated U-shaped steel piece having a forward legportion with an inclined, side 38 which forms a v-recess with theinclined side 3? of a floating steel piece 38. This floating piece isslidably mounted on pins 39 similar to the pins E, that projectforwardly from the 'rear leg portion of the 'U-piece 35. (See Figures2-,3, and l.) The floating steel pieces 38 are held in a yieldingposition away from the fixed portion 33 of the insert 35 by a-number ofsmall helical springs 42 whose ends fit in 'alined recesses in thefloating pieces and. the fixed portion of the insert. I

For the purpose of efiecting an arcuate adjustment of the insert 35,about the center 20 of the roll 2, in the recess 33 in the die plate 34,we have provided means similar to those employed in adjusting the middleV inserts l6 and ii. Referring to Figures 3 and 4, the numerals 4! and42 designate hollow head set screws in drilled and tapped holes in thedie plate 34, on either side of the insert 35 for engagement with (SeeFigures 2, 5,

it. These set screws are held secure against loosening by hollow headset screws 43 and 44 in the outer ends of the tapped holes in said dieplate. Radial screws 45 and 46 pass through slots 41, 41 in the insert35, into radial holes in the die plateto hold the, adjusted insertfirmly to the latter.

Within a recess 48 in the third die plate 49 in the bottom roll 3 wehave also provided an arcua-tely adjustable double V steel insert 55.This insert, which does not contain a floating V-member, may beinterchanged with the insert 35 in the top roll 2.

For the purpose of arcuately adjusting the insert 50, about the center5| of the bottom roll 3, we have provided in drilled and tapped holes inthe die plate 49, hollow head set screws 52 and 53-, similar to the setscrews 4| and 42. The set screws 52 and 53 are adapted to be locked intheir adjusted position by hollow head set screws 54 and 55 similar tothe set screws'43 and 44 respectively.

For the purpose of holding the insert 55 securely against the arcuatebottom of the recess 48 in the die plate 49, we have provided a radialscrew 55, similar to the screw 30. The head portion'of this screw isreceived by a slot in the insert 50, while its shank portion enters atapped hole in the die plate below the insert.

It will thus be seen that the floating inserts, as well as the fixedinserts in the second and third top and bottom die plates, are arcuatelyadjustable by the means before described in order to make it possible toobtain the exactly correct spacing of all the Vs in the sheet,regardless of the variation in the temper of the material.

If it is desired to provide for six V crimp roofing, the die plates I4and I5 carrying the middle inserts I6 and I! may be easily taken off andreplaced by die plates 51 and 58 formed with arcuate recesses 59 and 60respectively. (See Figure 7) In the recess 59 in the die plate 51 thereis mounted adjustable retainers 6| similar to the retainers 35, whichcarry floating pieces 62 similar to the floating pieces 38 for thepurpose of forming with the bottom'adjustable inserts 63 in the recess60 in the die plate 58, a double V in the sheet that will not crack itsspelter.

It is also tobe understood that the bottom roll 3 may be converted intothe female die roll and the top second into the male die roll byinterchanging the dies. The double and single V-inserts are maderemovable and interchangeable for this purpose.

If it is desired to provide for four crimp V roofing, the middle insertsl6 and I! may be taken out and replaced by blanks. In Figure 8 we haveillustrated a piece of 5-V crimp galvanized roofing 63 which is aproduct of our machine.

Having described our invention, we claim:

1. In a two-roll corrugating machine, a top roll and a bottom roll toreceive between them a sheet to be crimped, a pair of co-acting Vinserts in the first positions on said rolls, a pair of coacting Vinserts in the second positions on said rolls, a pair of co-acting Vinserts in the third positions on said rolls, and means for arcuatelyadjusting the second and third V inserts to obtain the correct spacingof all the Vs on the sheet irrespective of the variations in the temperof the material thereof.

2. In a two-roll corrugating machine, a top roll and a bottom roll toreceive between them a sheet to be crimped, a first, a second and athird die plate in each roll, co-acting V inserts carried by the firstdie plates, the second and third die plates being formed with arcuaterecesses, coacting V inserts in the recesses in the second and third dieplates in said rolls, and set screws engaging the second and third Vinserts to arcuately adjust them about the centers of the rolls toobtain the correct spacing of all the Vs on the sheet irrespective ofthe variations in the temper of the material thereof.

3. In a two-roll corrugating machine, a top roll and a bottom roll toreceive between them a sheet to be crimped, a double V insert secured inthe first position in the bottom roll, a floating double V insert in thefirst position in the top roll for co-action with the first insert belowit, a pair of co-acting V inserts in the second positions on said rolls,a double V insert secured in the .third position in the bottom roll, afloating double V insert in. the third position on the top roll forco-action with the third insert below it, and means for arcuatelyadjusting the second and third floating and fixed inserts to obtain thecorrect spacing of all the Vs on'the sheet irrespective of thevariations in the temper of the material thereof.

4. In a two-roll corrugating machine, a top roll and a bottom roll toreceive between them a sheet to be crimped, a first, a second and athird die plate in each roll, co-acting V inserts carried by the firstdie plate, the second and third die plates being formed with arcuaterecesses, coacting V inserts in the recesses in the second and third dieplates in said rolls, said second and third die plates being formed withoppositely disposed tapped holes communicating with said recesses, andset screws in said holes for engagement with the sides of the inserts insaid recesses to arcuately adjust them about the centers of the rolls asaxes to obtain the correct spacing of all the Vs on the sheetirrespective of the temper of 5 the material thereof.

5. An adjustable V crimp die insert for a die plate on a roll of atwo-roll corrugating machine, comprising an arcuate V insert formed witha wide longitudinal slot at one side of the V, a 1 0 screw in said slotfor entrance into a tapped hole in the die plate, and set screws intapped holes in the die plate for engagement with the sides of saidinsert to arcuately adjust it about the center of the roll. 15

6. An adjustable V crimp die insert for a die plate on a roll of atwo-roll corrugating machine, comprising an arcuate V-shaped insert, thelegs of which point outwardly, pins projecting inwardly from thetrailing leg of the insert, a piece 20 fioatingly mounted on said pinsand formed at its outer periphery with a V projection, the trailing endof said piece and the leading leg of the insert having inclined faces toform with the V projection a double V recess, springs for yield- 25ingly holding the floating piece away from the inclined face of theleading leg of the insert, said insert formed with a longitudinal sloton each side of the double V, a screw in each slot for entrance into atapped hole in the die plate, and set 30 screws in tapped holes in thedie plate for engagement with the side of said insert to adjust itabout'the center of the roll.

1 JOSEPH C. FISHER.

EDWARD A. KIEFER.

